Replace pom version using sed in Jenkinsfile - linux

Question

I have a variable myStrthat contains the following value:
"app": {
"services": {
"app": [{
"groupID": "com.mycompany",
"artifactId": "myapp-versions",
"version": "1.0.0"
},
{
"groupID": "com.mycompany.xyz",
"artifactId": "car-stats",
"version": "1.0-master"
},
{
"groupID": "com.mycompany.service",
"artifactId": "my-differential-service",
"version": "1.0.0-master"
}
]
}
}
Now I want to replace the version of only my-differential-service artifactId to NEW_VERSION.
I tried using sed command on myStr variable but couldn't succeed as I am not much familiar with this command.
Can anyone please guide me on how should I proceed to achieve this?
Any help would be highly appreciated.

Answer 1

When you need sed for parsing this, look for the support of the option -z in your sed. This option ignores the special meaning of \n.
When you know that version is the first field after the artifactId you can try
new_version=1.0.1 # avoid uppercase variable names
echo "$myStr" |
sed -rz 's/("my-differential-service",[^:]*: ")[^"]*/\1'"${new_version}"'/'
When the order of fields can change, you might want to ask for jq in Jenkins or try awk.
When you want to use sed but don't have the -z option, you can translate first:
echo "$myStr" | tr '\n' '\r' | sed -r 's/..../' | tr '\r' '\n'

Answer 2

If jq is available, congrats! and please try the following:
echo "{ $myStr }" | jq '(.app.services.app[] | select(.artifactId == "my-differential-service") | .version) = "NEW_VERSION"'
which yields:
{
"app": {
"services": {
"app": [
{
"groupID": "com.mycompany",
"artifactId": "myapp-versions",
"version": "1.0.0"
},
{
"groupID": "com.mycompany.xyz",
"artifactId": "car-stats",
"version": "1.0-master"
},
{
"groupID": "com.mycompany.service",
"artifactId": "my-differential-service",
"version": "NEW_VERSION"
}
]
}
}
}
If you do not need the outermost curly braces, please remove them by bash's parameter expansion or something similar.
As a fallback, you can say with sed:
echo "$myStr" | sed '
:l
N
$!b l
s/\("my-differential-service"[^"]*"version": *\)"[^"]*"/\1"NEW_VERSION"/g'
Hope this helps.